Telenetics 2185 - Manual (Page 40)

Telenetics 2185
3-18
Table 3-8. Switch Three
Leased-Line Backup Application Example
Another common application example for your 2185 is the Leased-Line
Backup application. In this example, the 2185 is again used to connect a
mainframe to remote users. The primary connection is through a digital
network via DSUs (Digital Service Units). The backup route is through
leased-lines via dial modems. Figure 3-10 shows this application.
Switch
Segment Setting Reason
3-1 Up Main Channel connection to DTE
3-2 Up Subchannel one connection to DTE
3-3 Up Subchannel two connection to DTE
3-4 Down Subchannel three connection to DCE
3-5 XX Subchannel four not used
3-6 XX Subchannel five not used